/// <summary>
/// Verifies that <paramref name="maybe"/> is NOT empty and contains
/// <paramref name="expected"/>.
/// </summary>
public static void Some <T>([DisallowNull] T expected, Maybe <T> maybe)
{
False(maybe.IsNone, "The maybe should not be empty.");
#if VISIBLE_INTERNALS
True(maybe.IsSome, "The maybe should not be empty.");
// BONSANG! When IsSome is true, Value is NOT null.
Equal(expected, maybe.Value !);
#else
if (maybe.TryGetValue(out T? value))
{
Equal(expected, value);
}
else
{
Failure("The maybe should not be empty.");
}
#endif
#if !PATCH_EQUALITY
NotEqual(Maybe <T> .None, maybe);
#endif
// We also test Contains().
True(maybe.Contains(expected));
}
